Introduction to Linux
Welcome to your Linux journey. Before you type your first command, it helps to understand what Linux actually is, where it came from, and why millions of developers, sysadmins, and cloud engineers use it every single day.
This chapter covers the big picture — who built Linux, what it is made of, and where it runs in the real world.
What’s in This Chapter
| Topic | What You Learn |
|---|---|
| What is Linux | Kernel, OS, distributions — the full picture |
| Linux History | From UNIX to Torvalds to today |
| Kernel vs Shell vs Distro | How the layers of Linux work together |
| Choosing a Linux Distro | Ubuntu, CentOS, Arch, Alpine — which one? |
| Linux in the Real World | Servers, cloud, containers, and beyond |
| Practice Exercises | Test your understanding |
Why Start Here?
Most Linux tutorials throw you straight into commands. That is like learning to drive by jumping on a motorway — technically possible, but not the best experience.
Understanding what Linux is and how it is structured will make every command you learn later feel logical rather than arbitrary.
Let’s start with the foundation.
Next → What is Linux
